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11篇 您的检索式:作者名="Sun Shaochun"
    题名 作者 年代 出处 被引量
1Molecular and Clinical Characterization of a Novel SCN5A Mutation Associated With Atrioventricular Block and Dilated Cardiomyopathy显示文摘Junbo Ge Aijun Sun Vesa Paajanen Shijun Wang Chunxi Su Zhiyin Yang Ying Li Shaochun Wang Jianguo Jia Keqiang Wang Yunzeng Zou Lizhi Gao Kun Wang Zheng Fan 2008Circulation: Arrhythmia and Electrophysiology2008,,2:1
2Molecular and Clinical Characterization of a Novel SCN5A Mutation Associated With Atrioventricular Block and Dilated Cardiomyopathy显示文摘Junbo Ge Aijun Sun Vesa Paajanen Shijun Wang Chunxi Su Zhiyin Yang Ying Li Shaochun Wang Jianguo Jia Keqiang Wang Yunzeng Zou Lizhi Gao Kun Wang Zheng Fan 2008Circulation: Arrhythmia and Electrophysiology2008,,2:1
3Efects of diferent casting mould cooling rates on microstructure and properties of sand-cast Al-7.5Si-4Cu alloy显示文摘In this work, Al-7.5Si-4Cu alloy melt modified by Al-10Sr, RE and Al-5Ti-B master alloys was poured into multi-step moulds made from three moulding sands, including quartz, alumina and chromite, to investigate comparatively the effects of different cooling rates of the casting mould on the alloy's microstructures and mechanical properties. The results show that with an increase in wall thickness, the cooling rate decreases, the dendrite arm spacing(DAS) increases significantly and the mechanical properties decrease steadily. The elongation is more sensitive to the cooling rate than the tensile strength. No obvious trend of the effect of wall thickness on hardness of the alloy was found. When the cooling rate is at its greatest, the microstructures and mechanical properties are the best when using chromite sand. The improvement of the properties is mainly attributed to the decrease of the DAS, the grain refinement and the metamorphic effect. Each of the three has a strong impact on the microstructures. Furthermore, a series of fitting models was established based on the data of the DAS to predict the mechanical properties of the multivariate sand-cast Al-7.5Si-4Cu alloy,Liu Guanglei Si Naichao Sun Shaochun Wu Qinfang 2013China Foundry2013,10,6:1
4DeceFL:a principled fully decentralized federated learning framework显示文摘Traditional machine learning relies on a centralized data pipeline for model training in various applications;however,data are inherently fragmented.Such a decentralized nature of databases presents the serious challenge for collaboration:sending all decentralized datasets to a central server raises serious privacy concerns.Although there has been a joint effort in tackling such a critical issue by proposing privacy-preserving machine learning frameworks,such as federated learning,most state-of-the-art frameworks are built still in a centralized way,in which a central client is needed for collecting and distributing model information(instead of data itself)from every other client,leading to high communication burden and high vulnerability when there exists a failure at or an attack on the central client.Here we propose a principled decentralized federated learning algorithm(DeceFL),which does not require a central client and relies only on local information transmission between clients and their neighbors,representing a fully decentralized learning framework.It has been further proven that every client reaches the global minimum with zero performance gap and achieves the same convergence rate O(1=T)(where T is the number of iterations in gradient descent)as centralized federated learning when the loss function is smooth and strongly convex.Finally,the proposed algorithm has been applied to a number of applications to illustrate its effectiveness for both convex and nonconvex loss functions,time-invariant and time-varying topologies,as well as IID and Non-IID of datasets,demonstrating its applicability to a wide range of real-world medical and industrial applications.Ye Yuan Jun Liu Dou Jin Zuogong Yue Tao Yang Ruijuan Chen Maolin Wang Chuan Sun Lei Xu Feng Hua Yuqi Guo Xiuchuan Tang Xin He Xinlei Yi Dong Li Guanghui Wen Wenwu Yu Hai-Tao Zhang Tianyou Chai Shaochun Sui Han Ding 2023National Science Open2023,2,1:1
5Concentration-dependent Morphology Control of Pt-coated-Ag Nanowires and Effects of Bimetallic Interfaces on Catalytic Activity显示文摘Silver nanowires(NWs) coated with platinum(Pt) nanoparticles were synthesized via a galvanic partial replacement of Ag NWs in an aqueous K_2PtCl_6 solution at room temperature. The products were characterized using a combination of electron microscopies,selected area electron diffraction,energydispersive X-ray mapping and X-ray diffraction. The surface morphology and Pt/Ag composition ratios are controlled by adjusting the K_2PtCl_6 concentration. Different concentrations result in various surface morphologies including rough nanoparticle coating,porous and relatively smooth surfaces. The formation mechanism was discussed based on the lattice constants' difference,concentration driven nucleation,consumption of Ag NWs,and stoichiometry of the replacement reaction. The effects of the bimetallic interface on the catalytic activity toward the reduction of 4-nitrophenol by sodium borohydride were studied. The activity of Ag–Pt NWs is highly enhanced over monometallic nanostructures,and optimized by a low Pt loading of 1.34 at.%,which indicates a catalytic role of the inter-metallic interface for the electron transfer.Yongguang Wang Xiangyu Wang Bo Sun Shaochun Tang Xiangkang Meng 2016Journal of Materials Science & Technology2016,32,1:1
6CONVERGENCE OF A MIXED FINITE ELEMENT FOR THE STOKES PROBLEM ON ANISOTROPIC MESHES显示文摘纸是学习一份低订单的集中性质的这的主要目的在各向异性的网孔下面为 Stokes 问题混合了有限元素。我们讨论各向异性的集中和方面比率的超级集中独立人士。没有网孔上的形状整齐假设和反的假设,在中央点的最佳的错误估计和自然超级集中被获得。为速度和压力的坡度的全球超级集中在处理方法的一根合适的柱子的帮助下被导出。而且,我们开发一个简单方法获得改进以前的工作的结果的超级靠近的性质。Qingshan Li Huixia Sun Shaochun Chen 2008Journal of Computational Mathematics2008,26,5:1
7Synthesis and Antitumor Activity of a New 7-Azaindole Derivative显示文摘ZHANG Peng SUI Dayun XU Huali SUN Weilun YU Xiaofeng QU Shaochun HU Jianbing WU Yi WANG Yingshi 2014Chemical Research in Chinese Universities2014,30,3:0
8A comprehensive construction of the domain ontology for stratigraphy显示文摘Stratigraphic knowledge,the cornerstone of geoscience,needs to be represented by the Knowledge Graph based upon ontology,in order to apply the state-of-the-art big-data techniques.This study aims to comprehensively construct the ontologies for the stratigraphic domain.This has been achieved by a federated,crowd intelligence-based collaboration among domain experts of major stratigraphic subdisciplines.The initial step is to enumerate key terms from authoritative references and incorporate them into the Geoscience Professional Knowledge Graphs(GPKGs)of Deep-time Digital Earth Project.During this process,semantic heterogeneities were meticulously addressed by professional judgement aided by an automatic detection of Homonyms at the GPKGs platform.Afterwards,these terms were further differentiated as either classes or properties and arranged in a hierarchical framework in a top-down process.Consequently,seven ontologies are constructed for major stratigraphic branches,i.e.,Lithostratigraphy,Biostratigraphy,Chronostratigraphy,Chemostratigraphy,Magnetostratigraphy,Cyclostratigraphy and Sequence Stratigraphy.The ontology of Biostratigraphy,among them,is elaborated here,as no biostratigraphic ontology has been attempted before to our knowledge.The constructed biostratigraphic ontology comprises following major root classes:Fossil,Biostratigraphic unit,Biostratigraphic horizon.Altogether,they contribute to the eventual dating and correlating of strata in another root class:Biostratigraphic correlation.In summary,the achievements of this study are probably heretofore the most comprehensive ontologies for the stratigraphic domain.Moreover,a proto model of semantic search engine was conceived to discuss potential application of our work for better querying stratigraphic references,utilizing the semantic liaison of the classes in the constructed ontologies.Huiqing Xu Yingying Zhao Hao Huang Shaochun Dong Yukun Shi Chunju Huang Huaichun Wu Zhiqi Qian Qiang Fang Huaguo Wen Zhongtang Su Shuang Dai Ronghua Wang Chao Li Chao Sun Junxuan Fan 2023Geoscience Frontiers2023,14,5:0
9MOFs derived ZnSe/N-doped carbon nanosheets as multifunctional interlayers for ultralong-Life lithium-sulfur batteries显示文摘The shuttle effect and slow conversion rate of lithium polysulfides(LiPSs)have become the main obstructs to the development of lithium-sulfur(Li-S)batteries.Herein,the low cost metal-organic frameworks derived nitrogen-doped carbon nanosheets embedded with zinc selenide nanoparticles(ZnSe/NC nanosheets)were designed and synthesized for Li-S batteries.As the LiPSs trapping-layer,these nanocomposites provide some key benefits:(1)The nitrogen doping changes local electron distribution in the carbon nanosheets,thus the electrical conductivity is greatly improved for facilitating the transport of electrons/ions.(2)Nitrogen atoms and ZnSe nanoparticles play an important role in anchoring the LiPSs via chemical interactions.(3)The remarkable catalytic activity of ZnSe nanoparticles can accelerate the redox kinetics of LiPSs.As a result,the Li-S battery with the ZnSe/NC nanosheets modified separator exhibits ultralong lifespan over 1500 cycles with a small capacity loss of only 0.046%per cycle at 1 C,which is superior over those reported values.Furthermore,the Li-S battery with a high sulfur loading of 4.71 mg cm^(-2) can still maintain a high areal capacity of 4.28 mAh cm^(-2) after 50 cycles.This work provides a new route to the design of multifunctional low cost and high-performance separators for remarkably stable Li-S batteries.Biao Wang Dongyue Sun Yilun Ren Xiaoya Zhou Yujie Ma Shaochun Tang Xiangkang Meng 2022Journal of Materials Science & Technology2022,,30:0
10Anisotropic Superconvergence Analysis for the Wilson Nonconforming Element显示文摘The regular condition (there exists a constant c independent of the element K and the mesh such that hK/ρK ≤ c, where hK and ρK are diameters of K and the biggest ball contained in K, respectively) or the quasi-uniform condition is a basic assumption in the analysis of classical finite elements. In this paper, the supercloseness for consistency error and the superconvergence estimate at the central point of the element for the Wilson nonconforming element in solving second-order elliptic boundary value problem are given without the above assumption on the meshes. Furthermore the global superconvergence for the Wilson nonconforming element is obtained under the anisotropic meshes. Lastly, a numerical test is carried out which confirms our theoretical analysis.Shaochun Chen Huixia Sun Shipeng Mao 2006Numerical Mathematics A Journal of Chinese Universities(English Series)2006,15,2:0
11The Role of Echocardiography in Hypertrophic Cardiomyopathy显示文摘Hypertrophic cardiomyopathy(HCM)is a common genetic cardiovascular disease and appears in all ethnic groups.HCM is diagnosed on the basis of left ventricular hypertrophy.Echocardiography is a key technique in the diagnosis of HCM,the prognosis of patients with HCM,the management strategy for HCM,and the follow-up of patients with HCM.This review briefly describes and discusses the practical use of established echocardiography techniques and the current and emerging echocardiographic methods that can help physicians in the correct diagnostic and pathophysiological assessment of patients with HCM.Jing Ping Sun Xing Sheng Yang Shaochun Wang 2017Cardiovascular Innovations and Applications2017,,B02:0
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